Swap to 5.6L block, go 100mm over bore (6L), P&P on heads/intake/ECE manifolds/various coatings etc.. Solid lifters on a HOT grind, spinning about 67-6800. With a properly tweaked fuel distro you can flow PLENTY of fuel to make this things Hum. Figure 325+Hp. More if you went EFI/Stand alone.
Jonathan
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